Lincoln Electric R3R-500 Output Connections STICK, TIG, AIR/CARBON ARC Cutting, Return to Section

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A-9 A-9

INSTALLATION

OUTPUT CONNECTIONS (STICK, TIG, AIR/CARBON ARC CUTTING)

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The output (welding) cables are connected to the out- put terminals marked “+” and “-”. See Table A.1 for recommended cable sizes for the combined lengths of electrode and work cables. The output terminals are located at the lower right and lower left corners of the front panel. Strain relief for the cables is provided by routing them through the rectangular holes in the base before connecting them to the output terminals. See Figure A.4.

NOTE: If the welder comes equipped with the polarity switch option, the output terminals are labeled “electrode” and “to work.”

WARNING

The output terminals are energized at all times.

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FIGURE A.4 - OUTPUT TERMINAL CONNECTIONS

1

3

2

1. NEGATIVE (-) WELDING CABLE CONNECTION

2. POSITIVE (+) WELDING CABLE CONNECTION

3. CABLE STRAIN RELIEF HOLES

TABLE A.1 - CABLE SIZES FOR COMBINED LENGTHS OF COPPER ELECTRODE

AND WORK CABLES

	Up to 100 ft	100 - 150 ft	150 - 200 ft	200 - 250 ft
Machine Size	(30 m)	(30 - 46 m)	(46 - 61 m)	(67 - 76 m)
300 Amp	1/0	1/0	2/0	3/0
(60% Duty	54 mm2	54 mm2	68 mm2	86 mm2
Cycle)
400 Amp	2/0	2/0	3/0	4/0
(60% Duty	68 mm2	68 mm2	86 mm2	108 mm2
Cycle)
500 Amp	2/0	3/0	3/0	4/0
(60% Duty	68 mm2	86 mm2	86 mm2	108 mm2
Cycle)
		IDEALARC R3R